12kW High Voltage Power Supplies

Spellman’s ST Series of 12kW high voltage power supplies are available in positive or negative polarities in 20 different models with outputs ranging from 1kV to 225kV. A full featured front panel allows easy local control, while an extensive analog interface provides comprehen­sive remote capability. The standard Ethernet and RS-232 digital interfaces simplify integrating the ST into your system design.

The ST’s robust IGBT inverter is inherently fault tolerant and is ideal for demanding applications like semiconductor processing and vacuum deposition. Many operational fea­tures can be configured by the user to suit their particular requirements. Power >100kW’s can be provided by con­figuring additional chassis in parallel.

The ST features a standard RS-232 and Ethernet digital interface. Utilizing these standard digital interfaces can dramatically simplify power supply interfacing require­ments saving the user both time and money, while enhan­cing functionality and overall capability. Spellman pro­vides a GUI with the ST that allows the customer to both customize operational features of the ST while also pro­viding basic power supply operational features. Details of the ST’s digital interface capability are described in detail in the ST manual, downloadable via the link on the first page of this data sheet.

Main control screen

Status screen

User configuration screen

Parallel Capability

The ST series is designed to offer additional power capa­bility by adding chassis in parallel to create a Master/ Slave configuration providing up to and beyond 100kW’s. The Master chassis is the point of connection for cus­tomer interfacing; this multi chassis system effectively functions as a single power supply. The Master unit retains the full featured front panel, while Slave units have a Blank Front Panel. To configure an orderable model number simply use Spellman’s applicable base ST model number and increment the power denominator in 12kW steps as required:

ST60P24

This would be an ST with a 60kV, positive polarity, providing 24kW’s of power (2 chassis)

Rear panel showing connections for parallel operation:

Master/slave 24kW ST:

Arc Intervention

Spellman’s ST power supplies have an arc intervention feature that senses arc currents via a fast acting current sense transformer. The purpose of the arc intervention circuitry is to prevent power supply damage from contin­uous, long term arcing. The factory default configuration will trip off the unit with an Arc Fault if 4 arcs occur in a 10 second time period. Customers can change basic arc intervention parameters (Arc Count, Arc Quench, Reramp Time, and Window Time) within preset limits via the digital interface; customized units can be provid­ed for unique arc prone environments, contact Spellman for details.

Parallel operation:

Additional power can be provided in incre­ments of 12kW’s by connecting chassis in parallel via the use of the ST’s master/slave configuration.

Use the applicable base ST model number and increment the power denominated in 12kW steps as required.

ST series is intended for installation as a component of a system. It is designed to meet CE standards, with conditions of acceptance often being: customer provided enclosure mounting, EMC filtering, and appropriate protection, and isolation devices. The ST series is not intended to be operated by end users as a stand-alone device. The ST series power supply can only be fully assessed when installed within a system, and as a component part within that system.

ST SELECTION TABLE

Maximum Rating

Model Number

kV

mA

1

12,000

ST1*12

2

6,000

ST2*12

3

4,000

ST3*12

4

3,000

ST4*12

6

2,000

ST6*12

8

1,500

ST8*12

10

1,200

ST10*12

12

1,000

ST12*12

15

800

ST15*12

20

600

ST20*12

30

400

ST30*12

40

300

ST40*12

50

240

ST50*12

60

200

ST60*12

70

171

ST70*12

80

150

ST80*12

100

120

ST100*12

120

100

ST120*12

150

67

ST150*10

225

40

ST225*10

*Substitute “P” for positive polarity and “N” for negative polarity. Polarity must be specified at time of order. 1-10kV units are inherently reversible by design requir­ing an internal wiring change to swap polarities. Intermediate voltage units are available by special order. 150kV units are limited to a maximum output of 10kW’s